A test method was developed for establishing limits for helicopter takeoff and landing imposed by turbulence and flight deck motion. An onboard recorder monitors the helicopter engine parameters, collective pitch lever position, pedal position, radar altitude, vertical and lateral acceleration, and instant of takeoff and landing. Onboard ship, relative wind speed and direction, pitching and rolling angles, and vertical and lateral acceleration are recorded. To quantify the human factors in controlling the helicopter a pilot rating technique is applied. It was found that operational limits for the helicopter in terms of relative wind speed and direction can be established straightforwardly. With respect to ship motion, it was found satisfactory to use the 2 sigma value of motion parameters as a representative measure to define limits. Wind tunnel tests of ship models are described.
Helicopter-Ship Qualification Testing
1979
16 pages
Report
No indication
English
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